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Maternal Condition And Facultative Sex Ratios In Populations With Overlapping Generations., L.E. Schwanz, J.G. Bragg, Eric Charnov
Maternal Condition And Facultative Sex Ratios In Populations With Overlapping Generations., L.E. Schwanz, J.G. Bragg, Eric Charnov
Biology Faculty & Staff Publications
Facultative investment in offspring sex is related to maternal condition in many organisms. In mammals, empirical support for condition-dependent sex allocation is equivocal, and there is some doubt as to theoretical expectations. Much theory has been developed to make predictions for condition-dependent sex ratios in populations with discrete generations. However, the extension of these predictions to populations with overlapping generations (OLGs; e.g., mammals) has been limited, leaving doubt as to the specific prediction for maternal-condition-dependent sex ratios in mammals. We develop a population genetics model that incorporates maternal effects on multiple offspring fitness components in a population with OLGs. Using …